In meta-oe/recipes-graphics/xinput-calibrator (Danny branch, currently used by Gumstix), there's a recipe called xinput-calibrator-git.bb, which installs a script for running a touchscreen calibration app if not already calibrated.
In meta-openembedded/meta-systemd/meta-oe/recipes-graphics/xinput-calibrator, there's a bbappend for this recipe, which declares a local file called xinput-calibrator.service, which is supposed to run the above script on startup. It inherits the systemd bbclass, which I assume knows how to install this service file automagically, since there's no explicit do_install copying the file anywhere. The trouble is, on my Gumstix, the service fails because it needs a DISPLAY environment variable to tell it what display to calibrate. I figured the simplest thing to do would be to add an Environment=DISPLAY=:0 line to the service unit file. My shameless hack was to add a ROOTFS_POSTPROCESS_COMMAND that runs sed on the final copy of this service file in the rootfs, to insert the Environment= line, and that works. But I'd rather just provide my own version of the file, and use another .bbappend to prepend its file location to FILESEXTRAPATHS, overriding the one in the systemd .bbappend file. So I tried that, just putting the following two lines into my own .bbappend: FILESEXTRAPATHS_prepend := "${THISDIR}/files:" PRINC := "${@int(PRINC) + 1}" and of course putting the tweaked service file into my files subdirectory. On starting the build, it almost immediately spat this out: NOTE: ['/home/pauld/yocto/meta-foo/recipes/xinput-calibrator_git.bbappend', '/home/pauld/yocto/poky/meta-openembedded/meta-systemd/meta-oe/recipes-gra phics/xinput-calibrator/xinput-calibrator_git.bbappend'] to ['/home/pauld/yocto/poky/meta-openembedded/meta-systemd/meta-oe/recipes-gr aphics/xinput-calibrator/xinput-calibrator_git.bbappend'] (That was all on one line, of course.) The do_rootfs failed, and its log says that xinput-calibrator is an unknown package, and that it can't satisfy the dependency from packagegroup-core-x11-base. I read somewhere that stacked bbappends are handled in the order of layer priority. Mine is 5, the meta-systemd layer is 7. I don't know which is "higher", or if one wants a higher or lower priority in order to be the last one to prepend to the path. But somehow, I think my problem is a little more fundamental. Can anyone give me a little guidance here? -- Ciao, Paul D. DeRocco Paul mailto:pdero...@ix.netcom.com _______________________________________________ yocto mailing list yocto@yoctoproject.org https://lists.yoctoproject.org/listinfo/yocto